chemistry

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Calculate the density of atoms in (001) in lithium. Express answer in atoms/cm.

  • chemistry -

    Lithium is a BCC Crystal
    a = 3.5092 * 10^-8

    Planar Density (001) (top plane) = 1/a^2

    = 8.12 * 10^14

  • chemistry -

    wrong

  • chemistry -

    What is the correct answer flou??

  • chemistry -

    I try again

  • chemistry -

    If lithium is a BCC crystal.

    planar density is atoms per area
    the 001 plane look like this
    o--o
    | |
    o--o

    the sides are equal to lattice constant a
    and the atoms in this area = 4(1/4) = 1

  • chemistry -

    I tried but its graded wrong 4 times. that's correct it is BCC. atom of this area is ! only but still tere is a mistake

  • chemistry -

    Am i the only one to make the obvious question here? If we knew how we got the answer, we could spot a mistake that might have been overlooked this entire time. How did we get the answer?

  • chemistry -

    The question has a mistake in it, look at the forum...

  • chemistry -

    1.218*10^15

    (001) its "Body" plane !!!!
    0---0
    |.0.|
    0---0

    4*(1/4)+ 1(1/2)= 1.5
    1.5/a^2= 1.218*10^15

  • chemistry -

    1.16e15

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